package com.bank.util;

import java.io.InputStream;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;

import org.apache.log4j.Logger;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.web.multipart.MultipartFile;

public class ImportExeclUtil {
	
	Logger logger =  Logger.getLogger(ImportExeclUtil.class);
	
    private final static String excel2003L =".xls";    //2003- 版本的excel  
    private final static String excel2007U =".xlsx";   //2007+ 版本的excel
    
    public List<List<Object>> getWorkListByExecl(InputStream in,MultipartFile fileName) throws Exception{
    	List<List<Object>> list = null;
        Workbook work = this.getWorkbook(in, fileName.getOriginalFilename());
    	if(work==null){
    		throw new Exception("创建execl失败");
    	}
    	Sheet sheet = null;  
        Row row = null;  
        Cell cell = null;
        list = new ArrayList<List<Object>>();  
        //遍历Excel中所有的sheet  
        for (int i = 0; i < work.getNumberOfSheets(); i++) {  
            sheet = work.getSheetAt(i);  
            if(sheet==null){continue;} 
             //遍历当前sheet中的所有行  
            for (int j = sheet.getFirstRowNum(); j <= sheet.getLastRowNum(); j++) {  
                row = sheet.getRow(j);
                if(row==null||row.getFirstCellNum()==j){continue;}  
                //遍历所有的列  
                List<Object> li = new ArrayList<Object>();  
                for (int y = row.getFirstCellNum(); y < row.getLastCellNum(); y++) {  
                    cell = row.getCell(y);  
                    li.add(this.getCellValue(cell));  
                }  
                list.add(li);  
            }  
        } 
        return list;  
    }
    
    /***
     * 根据版本创建对应工作簿
     * 
     * */
    public  Workbook getWorkbook(InputStream inStr,String fileName) throws Exception{  
    	logger.debug("开始创建工作簿fileName:"+fileName);
        Workbook wb = null;
        String fileType = fileName.substring(fileName.lastIndexOf("."));  
    	logger.debug("开始创建工作fileType:"+fileType);
        if(excel2003L.equals(fileType)){ 
            wb = new HSSFWorkbook(inStr);  //2003-  
        }else if(excel2007U.equals(fileType)){  
            wb = new XSSFWorkbook(inStr);  //2007+  
        }else{  
            throw new Exception("解析的文件格式有误！");  
        }
        logger.debug("创建工作簿成功 ");
        
        return wb;  
    }  

    /** 
     * 描述：对表格中数值进行格式化 
     * @param cell 
     * @return 
     */  
    public  Object getCellValue(Cell cell){  
        Object value = null;  
        DecimalFormat df = new DecimalFormat("0");  //格式化number String字符  
        SimpleDateFormat sdf = new SimpleDateFormat("yyy-MM-dd");  //日期格式化  
        DecimalFormat df2 = new DecimalFormat("0.00");  //格式化数字  
          
        switch (cell.getCellType()) {  
        case Cell.CELL_TYPE_STRING:  
            value = cell.getRichStringCellValue().getString();  
            break;  
        case Cell.CELL_TYPE_NUMERIC:  
            if("General".equals(cell.getCellStyle().getDataFormatString())){  
                value = df.format(cell.getNumericCellValue());  
            }else if("m/d/yy".equals(cell.getCellStyle().getDataFormatString())){  
                value = sdf.format(cell.getDateCellValue());  
            }else{  
                value = df2.format(cell.getNumericCellValue());  
            }  
            break;  
        case Cell.CELL_TYPE_BOOLEAN:  
            value = cell.getBooleanCellValue();  
            break;  
        case Cell.CELL_TYPE_BLANK:  
            value = "";  
            break;  
        default:  
            break;  
        }  
        return value;  
    }  

}
